Water change temperature reduction.

[JoeQ]

With the hot weather I'm looking to reduce temperatures though water changes. My question is: what degree of a change will be safe for my fish? Example my tank is 80 degrees, with a 50% water change can I refill with 70 degree water, or will that 10 degree difference be too much of a change in too short amount of time?

Edited July 2, 2023 by JoeQ

[JoeQ]

On 7/2/2023 at 12:44 PM, Pepere said:

I dont think a decrease of 5 degrees would be problematic.

At what point would the differential be too great?

[Beardedbillygoat1975]

I think when you get above 10 degrees you’re opening yourself up to more issues. Shock and stress related illness is what I’m worried about. If you need more than the 5 degrees running a fan over the surface can get you another 3 degrees. Another way I know some people will do this is add a water bottle that’s frozen but I’d save this for gasping fish or temps in the 90+ when you’re trying to get your tank closer to 80. 

[JoeQ]

On 7/2/2023 at 12:59 PM, Beardedbillygoat1975 said:

I think when you get above 10 degrees you’re opening yourself up to more issues.

Thanks, that what I was thinking, 10 degrees being the biggest acceptable difference. Im a worry wort tho so I only did 3 degrees difference . It still got me nervous tho!!!! 😂 

 

On 7/2/2023 at 12:58 PM, Pepere said:

Realistically? How much do you want to lower the temp?

No set goal, just randomly wondering.